ActionFilterAttribute不叫

Question

我有這樣的自定義操作過濾器：

public class PermissionChecker: ActionFilterAttribute 
{ 
    private int _permissionId { get; set; } 
    private IUserSelectorService _userService { get; set; } 

    public PermissionChecker(int permissionId) 
    { 
     _permissionId = permissionId; 
     _userService = new UserSelectorService(); 
    } 

    public PermissionChecker(int permissionId, IUserSelectorService userService) 
    { 
     _permissionId = permissionId; 
     _userService = userService; 
    } 

    public override void OnActionExecuting(HttpActionContext actionContext) 
    { 
     base.OnActionExecuting(actionContext); 
    } 
} 

，我把它在我的行動：

public class HomeController : Controller 
{ 
    [PermissionChecker(1)] 
    public ActionResult Index() 
    { 
     return View(); 
    } 
} 

，但它不工作！即使在PermissionChecker的構造函數中，代碼也不會傳入onActionExecuting。

Answer 1

您OnActionExecuting的簽名是不正確的，它應該有ActionExecutingContext：

提供了ActionFilterAttribute類的ActionExecuting方法的上下文。

public override void OnActionExecuting(ActionExecutingContext filterContext){ 
    base.OnActionExecuting(filterContext); 
}